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HURRICANE SAM FORECAST/ADVISORY NUMBER  30
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL182021
0300 UTC THU SEP 30 2021
 
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.
 
INTERESTS IN BERMUDA SHOULD MONITOR THE PROGRESS OF SAM.  A
TROPICAL STORM WATCH COULD BE REQUIRED FOR THE ISLAND ON THURSDAY.
 
HURRICANE CENTER LOCATED NEAR 20.6N  58.4W AT 30/0300Z
POSITION ACCURATE WITHIN  15 NM
 
PRESENT MOVEMENT TOWARD THE NORTHWEST OR 315 DEGREES AT  10 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  940 MB
EYE DIAMETER  15 NM
MAX SUSTAINED WINDS 125 KT WITH GUSTS TO 150 KT.
64 KT....... 55NE  45SE  40SW  45NW.
50 KT....... 90NE  60SE  60SW  70NW.
34 KT.......130NE 120SE  90SW 100NW.
12 FT SEAS..180NE 135SE 150SW 180NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 20.6N  58.4W AT 30/0300Z
AT 30/0000Z CENTER WAS LOCATED NEAR 20.3N  58.0W
 
FORECAST VALID 30/1200Z 21.9N  59.6W
MAX WIND 130 KT...GUSTS 160 KT.
64 KT... 55NE  45SE  40SW  45NW.
50 KT... 90NE  60SE  60SW  70NW.
34 KT...130NE 120SE  90SW 100NW.
 
FORECAST VALID 01/0000Z 24.1N  60.9W
MAX WIND 125 KT...GUSTS 150 KT.
64 KT... 50NE  45SE  35SW  45NW.
50 KT... 90NE  60SE  60SW  70NW.
34 KT...130NE 130SE  90SW 100NW.
 
FORECAST VALID 01/1200Z 26.8N  61.8W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 50NE  45SE  35SW  40NW.
50 KT... 80NE  60SE  60SW  60NW.
34 KT...130NE 140SE  90SW 100NW.
 
FORECAST VALID 02/0000Z 29.6N  61.8W
MAX WIND 115 KT...GUSTS 140 KT.
64 KT... 50NE  50SE  40SW  40NW.
50 KT... 80NE  80SE  60SW  70NW.
34 KT...140NE 150SE 110SW 110NW.
 
FORECAST VALID 02/1200Z 32.2N  60.7W
MAX WIND 110 KT...GUSTS 135 KT.
50 KT... 80NE  80SE  60SW  70NW.
34 KT...140NE 150SE 110SW 130NW.
 
FORECAST VALID 03/0000Z 34.3N  59.2W
MAX WIND 100 KT...GUSTS 120 KT.
50 KT... 80NE  80SE  70SW  80NW.
34 KT...140NE 160SE 130SW 150NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 150 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 04/0000Z 37.5N  54.5W
MAX WIND  85 KT...GUSTS 105 KT.
 
OUTLOOK VALID 05/0000Z 42.0N  48.5W
MAX WIND  70 KT...GUSTS  85 KT.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 20.6N  58.4W
 
NEXT ADVISORY AT 30/0900Z
 
$$
FORECASTER BLAKE
 
 
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